diff --git a/opm/simulators/wells/MultisegmentWell_impl.hpp b/opm/simulators/wells/MultisegmentWell_impl.hpp
index 01225feab..143c99769 100644
--- a/opm/simulators/wells/MultisegmentWell_impl.hpp
+++ b/opm/simulators/wells/MultisegmentWell_impl.hpp
@@ -887,6 +887,7 @@ namespace Opm
         auto obtain = [this](const Eval& value)
                       {
                           if constexpr (std::is_same_v<Value, Scalar>) {
+                              static_cast<void>(this); // suppress clang warning
                               return getValue(value);
                           } else {
                               return this->extendEval(value);
@@ -989,7 +990,7 @@ namespace Opm
         auto obtain = [this](const Eval& value)
                       {
                           if constexpr (std::is_same_v<Value, Scalar>) {
-                              (void)this; // suppress clang warning
+                              static_cast<void>(this); // suppress clang warning
                               return getValue(value);
                           } else {
                               return this->extendEval(value);
diff --git a/opm/simulators/wells/StandardWell_impl.hpp b/opm/simulators/wells/StandardWell_impl.hpp
index 80172708a..ea3ceb457 100644
--- a/opm/simulators/wells/StandardWell_impl.hpp
+++ b/opm/simulators/wells/StandardWell_impl.hpp
@@ -129,6 +129,7 @@ namespace Opm
         auto obtain = [this](const Eval& value)
                       {
                           if constexpr (std::is_same_v<Value, Scalar>) {
+                              static_cast<void>(this); // suppress clang warning
                               return getValue(value);
                           } else {
                               return this->extendEval(value);
@@ -145,6 +146,7 @@ namespace Opm
         auto zeroElem = [this]()
                         {
                             if constexpr (std::is_same_v<Value, Scalar>) {
+                                static_cast<void>(this); // suppress clang warning
                                 return 0.0;
                             } else {
                                 return Value{this->primary_variables_.numWellEq() + Indices::numEq, 0.0};
@@ -579,7 +581,7 @@ namespace Opm
         auto obtain = [this](const Eval& value)
                       {
                           if constexpr (std::is_same_v<Value, Scalar>) {
-                              (void)this; // suppress clang warning
+                              static_cast<void>(this); // suppress clang warning
                               return getValue(value);
                           } else {
                               return this->extendEval(value);